Digital to analog converter device and calibration method
AssigneeRealtek Semiconductor Corp.
InventorsChih-Chieh Yang, Shih-Hsiung Huang, Liang-Huan Lei
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Abstract
A digital-to-analog converter (DAC) device includes a current-steering DAC circuitry and a calibration circuitry. The current-steering DAC circuitry generates a first signal according to multiple least significant bits of an input signal, and generates a second signal according to multiple most significant bits of the input signal. The calibration circuitry performs a non-binary search algorithm to generate a calibration signal in response to a comparison result of the first signal and the second signal, in order to calibrate the current-steering DAC circuitry according to the calibration signal.
Claims16
A digital-to-analog converter (DAC) device comprising:
- a current-steering DAC circuitry configured to generate a first signal according to a plurality of least significant bits of an input signal, and generate a second signal according to a plurality of most significant bits of the input signal;
- and
- a calibration circuitry configured to perform a non-binary search algorithm to generate a calibration signal in response to a comparison result of the first signal and the second signal, in order to calibrate the current-steering DAC circuitry according to the calibration signal.
A calibration method suitable for a current-steering DAC circuitry, wherein the calibration method comprises:
- generating a first signal according to a plurality of least significant bits of an input signal by the current-steering DAC circuitry, and generating a second signal according to a plurality of most significant bits of the input signal by the current-steering DAC circuitry;
- and
- in response to the first signal and the second signal, performing a non-binary search algorithm to generate a calibration signal, and calibrating the current-steering DAC circuitry according to the calibration signal.
Dependencies are inferred from the claim text.